Drive-wheel for traction-engines.



L. HMWELLENSIEK.

1mm; WHEEL FOR TRACTION mamas.

APPLIOA'IUON FILED KAY 11, 1914. 1, 1 26 ,600, Patented Jan. 26, 1915.

2 SHEETS-SHEET 1- INVENTOH [TA/E8858:

THE NORRIS PETERS CO. PHOTD-LITHQ. \Vfi SHINGmN, D- C L. H. WELLENSIEK.

DRIVE WHEEL FOB. TRACTION ENGINES.

APPLICATION FILED MAY 11, 1914.

1, 1 26,600. Patented Janfze, 1915.

2 SHEETS-SHEET 2.

/3. M. 22 I BY A TTOH/VE Y 5 LOUIS H. WELLENSIEK, OF HOUSTON, TEXAS, ASSIGNOR F ONE-HALF TO S. W. TURNER,

UNITED STATES PATENT OFFICE.

OF HOUSTON, TEXAS.

DRIVE-WHEEL FOR TRACTION-ENGINES.

Specification of Letters Patent.

Patented Jan. 26, 1915.

Application filed. May 11, 1914. Serial No. 837,750.

To all whom it may concern Be it known that I, LOUIS H. WELLnN- sink, a citizen of the United States, residing at Houston, in the county of Harris and State of Texas, have invented certain new and useful Improvements in Drivel Vheels for'Traction-Engines, of which the following is a specification.

This invention relates to new and useful improvements in drive wheels for traction engines. 7 I

The object of the invention is to provide a wheel of the character described having a lug hinged or pivoted to the rim thereof and which normally projects beyond the periphery of said rim, but which may be withdrawn within the rim. Wheels of the character herein described are designed to be used on traction engines, which travel over the ordinary dirt road and it is necessary that the rim of the wheel have projecting lugs which engage withthe surface of the road and prevent slippage of the wheels. Ordinarily these lugs are integral with the wheel rim and when pavement, or a bridge having a floor formed of boards, is encountered, the wheel lugs injure and tear up sald paving or floor. The lugs of the wheel here indescribed are pivoted so that they maybe withdrawn when not needed and the injury above pointed out willthus be avoided.

A further feature of the invention resides in the provision of means whereby the lugs may be securely held either in their extended or withdrawn position.

With the above and other objects in view, the invention has particular relation to certain novel. features of construction, operation and arrangement of parts, an example of which is given in this specification and illustrated in the accompanying drawings, wherein-- Figure 1 is a side view of a traction wheel, having the improved form of lug. Fig. 2 shows an assembled view of the lug and connecting parts. Fig. 3 shows a longitudinal vertical section of the lug. Fig. 4L shows a bottom view thereof. Fig. 5 is a top view thereof. Fig. 6 shows a front elevation of the lug. Fig. 7 shows a rear view thereof. Fig. 8 shows a transverse vertical sectional view, taken on the line aa of Fig. 2. Fig. 9 shows a transverse vertical sectional view, taken on the line bb of Fig. 2. Figs. 10 and 11 show side and top views, respectively, of a form of hinge employed for pivoting the lug, and Figs. 12 and 13 show top and side views, respectively, of a form of bracket employed for receiving one end of the spring supporting rod employed.

Referring now more particularly to the drawings, wherein like numerals of reference designate similar parts in each of the figures, the numeral 1 refers to the wheel rim supported from the hub 2 by means of the spokes 3. This rim is usually formed of steel or some other suitable metal and is of considerable Width. The wheel shown in Fig. 1 is one of the rear or traction wheels, of the ordinary traction engine and receives rotation from the motor and propels the machine along. As the machine moves forward, the wheel rotates in thedirection in dicated by the arrows in Figs. 1 and 2. When traveling over soft or slippery surfaces, it is necessary that the rim 1 have projecting lugs to prevent slippage and for that purpose the lugs 4 have been provided. Each lug at has a lateral extension 5 which also projects inwardly beyond the base of the lug, said extension projecting through and fitting in a slot 6, cut through the rim 1. Projecting inwardly from the rim 1 is a double hinge member, Whose parts are indicated by the numerals 7, 7 said member embracing the inwardly projecting extensions 5 and an alined orifice 8 extends through said hinge member and extension, which receives the pin 9, forming a pivot on whichthe lug operates. The hinge member 7 may be made integral with the rim,

shown in Fig. 2, or may be a separate memher, as shown in Figs. 10 and 11, in which case it will be bolted to the inner side of the rim 1. Secured to the inner side of the rim, in the rear of each lug 4 is a bracket 10, which projects inwardly from the rim and the extension 5 has a rearwardl y projecting hinge member 11, to which one end of the rod 12 is pivoted. The other end of this rod slides through an alined orifice 13, in the bracket 10. Surrounding the rod 12 is a strong coil spring 14, whose ends terminate in the collars 15, 15, which resist against the hinge member 11 and the bracket 10, respectively, but which are slidable on the rod 12. When the lug 4 projects from the rim 1, the resistance of the spring 14; against the hinge member 11 will operate to hold it in said projecting position. When occasion may arise, "where the projecting" lugs will not be desirable, the engine may be stopped and the lugs manually Withdrawn,

by"'forc1ng' e'a'ch' h1g4 around into its c'orre'- sponding slot 6, the extension 5 and the hinge member 11 then assuming the position shown in dotted linesin" Fig. '2' During this operation, the springili will yieldso as'to permit the Withdrawal of the lug, the

rod 12 sliding through the orificeld -when' the hinge member ll has assumed the posiof the lug" may bev'aried, but- I herebyre serve the right to make such mechanical changes therein as vvill not depart fronrthe' principle of the invention, as embodied the pended'claims. v

-What I claim i 1. A'Wheel of the character described havinga rim, saidrim' being: providedwvith slots, a lug projecting through each slotanrr pivotedto the 'rim so: asto'p'ro'ject through orto be Withdrawn Within the 1 rim, a lat} eral extension-carried by the lug and resting in said slotwhen the lugflisin its projecting position, and aresilientmember operating.

in resistanceto the lug; and holding the same in either ofsaidpositions;

t 2. A- Wheel of the character described having a rim," a plurality of lugs pivoted to the rim and arranged to project therefrom, said lugs being freelymovable on their pivotal supports; so as to be readily Withdrawn Within the'rim, a'lateral extension carried by each lug and restinginthe corresponding slot when its lugis in'its projecting posi' Copies-of this'patent may be obtained for tion, and aresilient member operated in resistance to the lug and holding the same in either of said ositions. 7

" 3ff-A Ldevic'e or the "character described inc'l'udi'nga rim having a slot therethrough, a lug projecting through said slot and being pivoted to the ri1n,a bracket fixed to the inner side of the rim in the rear of saidlug,

a'rod pivoted to the inner end of the1ug,'at o1'1'e"-'end'*and yvh'o'se* other end has a slidable engagement With said bracket, and a resilient member surrounding-saidrod and interposed between said bracket" and the-inner endof said lags 4. A device of the-character described ineluding a rim, a lug pivoted thereto and normally rojecting beyond said rim,-'-a' br'a'cketfixe'd to the imif side of said rim,

in the rear of said lug, rod' pivo'tedto the innerend of said 1ug, at* one endand Whose other end has slidable 5 engage1n'ent"vvithsaid bracket and a resilient member Suirounding said rod; and interposed between the said bracket the inner end of? said-T 5-. Adevice of the character described includin a rim, having a slot therethrou h,

a lug p'roj acting through said slot 1 and I being pivoted-to the rinn a' lateral'ext'ension carried by sai'd? lug and resting" in said slot when-' the 1 lug is in its projecting; position,-

said'lug-havii1gan inward extension and a resilient member, one end 5 of i which isfiXe'd relative td' theTiiiI andthe other 'endfof' which nsmne inward extension ofsaid lugg v v testimony whereof I have signed myname to this specification the presence of twosubsc'ribing'Witnesses.

r *LOUISfH': WELLEN'SIEK. Witnesses? i i G. iY: lVl'oFFrr'r,

TURNER;

five cents each, by addressing the C'ommissioner'ofPatents;

washingtomnc. i 

